Merge pull request #4197 from mthomsonnz/patch-1

DOCS: Fix 404 errors on all lesson links

docs/en/01_Tutorials/index.md

@@ -10,16 +10,16 @@ These tutorials are deprecated, and have been replaced by the new [Lessons](http
 These include video screencasts, written tutorials and code examples to get you started working with SilverStripe websites.
 
 * [How to set up a local development environment in SilverStripe](https://vimeo.com/108861537)
-* [Lesson 1: Creating your first theme](http://www.silverstripe.org/learn/lessons/lesson-1-creating-your-first-theme/)
-* [Lesson 2: Migrating static templates into your theme](http://www.silverstripe.org/learn/lessons/lesson-2-migrating-static-templates-into-your-theme/)
-* [Lesson 3: Adding dynamic content](http://www.silverstripe.org/learn/lessons/lesson-3-adding-dynamic-content/)
-* [Lesson 4: Working with multiple templates](http://www.silverstripe.org/learn/lessons/lesson-4-working-with-multiple-templates/)
-* [Lesson 5: The holder/page pattern](http://www.silverstripe.org/learn/lessons/lesson-5-the-holderpage-pattern/)
-* [Lesson 6: Adding Custom Fields to a Page](http://www.silverstripe.org/learn/lessons/lesson-6-adding-custom-fields-to-a-page/)
-* [Lesson 7: Working with Files and Images](http://www.silverstripe.org/learn/lessons/lesson-7-working-with-files-and-images/)
-* [Lesson 8: Introduction to the ORM](http://www.silverstripe.org/learn/lessons/lesson-8-introduction-to-the-orm)
-* [Lesson 9: Data Relationships - $has_many](http://www.silverstripe.org/learn/lessons/lesson-9-working-with-data-relationships-has-many)
-* [Lesson 10: Introduction to the ORM](http://www.silverstripe.org/learn/lessons/lesson-10-working-with-data-relationships-many-many)
+* [Lesson 1: Creating your first theme](http://www.silverstripe.org/learn/lessons/creating-your-first-theme)
+* [Lesson 2: Migrating static templates into your theme]http://www.silverstripe.org/learn/lessons/migrating-static-templates-into-your-theme)
+* [Lesson 3: Adding dynamic content](http://www.silverstripe.org/learn/lessons/adding-dynamic-content)
+* [Lesson 4: Working with multiple templates](http://www.silverstripe.org/learn/lessons/working-with-multiple-templates)
+* [Lesson 5: The holder/page pattern](http://www.silverstripe.org/learn/lessons/the-holderpage-pattern)
+* [Lesson 6: Adding Custom Fields to a Page](http://www.silverstripe.org/learn/lessons/adding-custom-fields-to-a-page)
+* [Lesson 7: Working with Files and Images](http://www.silverstripe.org/learn/lessons/working-with-files-and-images)
+* [Lesson 8: Introduction to the ORM](http://www.silverstripe.org/learn/lessons/introduction-to-the-orm)
+* [Lesson 9: Data Relationships - $has_many](http://www.silverstripe.org/learn/lessons/working-with-data-relationships-has-many)
+* [Lesson 10: Introduction to the ORM](http://www.silverstripe.org/learn/lessons/working-with-data-relationships-many-many)
 
 
 ## Help: If you get stuck